1; Test 32-bit atomic XORs.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
4
5; Check XORs of a variable.
6define i32 @f1(i32 %dummy, i32 *%src, i32 %b) {
7; CHECK-LABEL: f1:
8; CHECK: l %r2, 0(%r3)
9; CHECK: [[LABEL:\.[^ ]*]]:
10; CHECK: lr %r0, %r2
11; CHECK: xr %r0, %r4
12; CHECK: cs %r2, %r0, 0(%r3)
13; CHECK: jl [[LABEL]]
14; CHECK: br %r14
15  %res = atomicrmw xor i32 *%src, i32 %b seq_cst
16  ret i32 %res
17}
18
19; Check the lowest useful constant.
20define i32 @f2(i32 %dummy, i32 *%src) {
21; CHECK-LABEL: f2:
22; CHECK: l %r2, 0(%r3)
23; CHECK: [[LABEL:\.[^ ]*]]:
24; CHECK: lr %r0, %r2
25; CHECK: xilf %r0, 1
26; CHECK: cs %r2, %r0, 0(%r3)
27; CHECK: jl [[LABEL]]
28; CHECK: br %r14
29  %res = atomicrmw xor i32 *%src, i32 1 seq_cst
30  ret i32 %res
31}
32
33; Check an arbitrary constant.
34define i32 @f3(i32 %dummy, i32 *%src) {
35; CHECK-LABEL: f3:
36; CHECK: xilf %r0, 3000000000
37; CHECK: br %r14
38  %res = atomicrmw xor i32 *%src, i32 3000000000 seq_cst
39  ret i32 %res
40}
41
42; Check bitwise negation.
43define i32 @f4(i32 %dummy, i32 *%src) {
44; CHECK-LABEL: f4:
45; CHECK: xilf %r0, 4294967295
46; CHECK: br %r14
47  %res = atomicrmw xor i32 *%src, i32 -1 seq_cst
48  ret i32 %res
49}
50